<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>054-边框圆角.html</title>
	<style>
		*{
			margin: 0;
			padding: 0;
		}
		div{
			width: 400px;
			height: 400px;
			background-color: black;
			border: 15px solid #ccc;
			margin: 150px auto;
			/*border-top-left-radius: 250px;
			border-top-right-radius: 250px;
			border-bottom-left-radius: 250px;
			border-bottom-right-radius: 250px;
			*/
			/*border-top-left-radius: 50%;
			border-top-right-radius: 50%;
			border-bottom-left-radius: 50%;
			border-bottom-right-radius: 50%;*/
			/*border-radius: 50%;*/
			/*border-radius: 20px;*/
			border-radius: 250px;

		}
		div:hover{
			background-color: green;
		}
	</style>
</head>
<body>
	<div>
		<img src="../photo/fennu.jpg" alt="">
	</div>
</body>
</html>